add ip per pod across vms

Vagrant+salt setup for providing a openvswitch based network for minions.
Pods will get an IP address that can be reached from across nodes/pods.
This is redundant with what is in docker/init.sls where it also installed bridge-utils when not on Red Hat... seems like this is now a common installed package so can we just modify the docker/init.sls to always do bridge-utils, and remove it from sdn/init.sls